Presentation 2003/8/14
Optical Pulse Propagation in Adult Heads Based on the Finite Difference Time Domain (FDTD) Analysis and its Application to Optical Computer Tomography
Takashi OTOMO, Takumi ISHIKAWA, Daisuke OMORI, Tadatoshi TANIFUJI,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) The finite difference time domain (FDTD) analysis has been successfully formulated for predicting time resolved reflectance of an optical pulse from scattering bodies with nonscattering (clear) regions. The nondiffusive light propagation across a clear region has been calculated based on the invariance of the light intensity along the ray in free space. The additional equivalent source functions generated by the nondiffusive light entering the scattering region have been introduced into the diffusion equations and the FDTD analysis has been formulated. Time resolved reflectance of the three-layered slab containing a clear layer was calculated based on the formulation. It has been become clear that received light intensity and mean time of flight estimated from the reflectance agree with previously reported experimental data quite well. It has also been found that the absorption loss of the scattering region beyond the clear layer is estimated from the time resolved reflectance.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Diffusion equations / FDTD analysis / Optical tomography / Cerebrospinal fluid / Mean time
Paper # OCS2003-51
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Conference Information
Committee OCS
Conference Date 2003/8/14(1days)
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Registration To Optical Communication Systems (OCS)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Optical Pulse Propagation in Adult Heads Based on the Finite Difference Time Domain (FDTD) Analysis and its Application to Optical Computer Tomography
Sub Title (in English)
Keyword(1) Diffusion equations
Keyword(2) FDTD analysis
Keyword(3) Optical tomography
Keyword(4) Cerebrospinal fluid
Keyword(5) Mean time
1st Author's Name Takashi OTOMO
1st Author's Affiliation Department of Electrical and Electronics Engineering, Kitami Institute of Technology()
2nd Author's Name Takumi ISHIKAWA
2nd Author's Affiliation Department of Electrical and Electronics Engineering, Kitami Institute of Technology
3rd Author's Name Daisuke OMORI
3rd Author's Affiliation Department of Electrical and Electronics Engineering, Kitami Institute of Technology
4th Author's Name Tadatoshi TANIFUJI
4th Author's Affiliation Department of Electrical and Electronics Engineering, Kitami Institute of Technology
Date 2003/8/14
Paper # OCS2003-51
Volume (vol) vol.103
Number (no) 255
Page pp.pp.-
#Pages 6
Date of Issue